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Failed to recover root password in Solaris 10 on Sparc CPU Sun Ultra10

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Operating Systems Solaris Failed to recover root password in Solaris 10 on Sparc CPU Sun Ultra10
# 8  
Old 04-20-2012
Quote:
Originally Posted by fromtexas0
My problem is that at single user mode prompt, when I typed #passwd, it complains about password database is busy. and permission denied (see my original post).
Please post the output of these commands:
Code:
grep root /a/etc/passwd /a/etc/shadow
ls -l /a/etc/*tmp /a/etc/nsswitch.conf
grep "^passwd" /a/etc/nsswitch.conf
grep PASSREQ /a/etc/default/login

# 9  
Old 04-20-2012
Hi, Jlliagre,

Here are the outputs from all these commands -

Code:
#grep root /a/etc/passwd /a/etc/shadow
/a/etc/passwd:root:x:0:0:Super-User:/:/sbin/sh
/a/etc/shadow:root::6445::::::

Code:
#ls -l /a/etc/*tmp /a/etc/nsswitch.conf
-rw-r--r--   1 root  sys   943  Dec 24 2007  /a/etc/nsswitch.conf

Code:
#grep "^passwd" /a/etc/nsswitch.conf
passwd:   files

Code:
#grep PASSREQ /a/etc/default/login
#PASSREQ determines if login requires a password.
PASSREQ=YES
#

Thanks,
Josh
# 10  
Old 04-20-2012
Code:
PASSREQ=NO

in the login file should help.
# 11  
Old 04-20-2012
Hi All,

I've seen this thread going along for a few days now and I know that I'm coming to this late so what I'm about to say might be irrelevant.

However, if I had this situation my thoughts would be to boot into single user:

Code:
 
boot cdrom -s

Mount the harddisk root filesystem under /a

Change the root to /a

Quote:
chroot /a
Then use passwd command to change the root passwd:

Code:
 
passwd root

I don't think it will ask for the old password because you're logged in as God.

Has this been tried? If so, why doesn't it work.

I assume the passwd database busy error is due to the fact that it's still looking at the cdrom filesystem as root.

Comments anyone?
# 12  
Old 04-20-2012
Hi Jlliagre,

Thanks for your reply.

I boot machine into single user mode and mount filesystem on /a, and I changed PASDSREQ=YES to PASSREQ=NO

Code:
Code:
 
#vi /a/etc/default/login
#PASSREQ determines if login requires a password.
PASSREQ=NO

verification:

Code:
Code:
 
#grep PASSREQ /a/etc/default/login
#PASSREQ determines if login requires a password.
PASSREQ=NO
#

After umount /a and boot back to normal CDE login page, it still asked for password after username (root). It still complains: login incorrect; please try again. Not working.

I then went back to single user mode and tried to edit out the :x: on the root password in the passwd file.

Code:
Code:
 
#vi /a/etc/passwd
root::0:0:Super-User:/:/sbin/sh

verification:
Code:
Code:
 
#grep root /a/etc/passwd /a/etc/shadow
/a/etc/passwd:root::0:0:Super-User:/:/sbin/sh
/a/etc/shadow:root::6445::::::
#

But it still asked for password at login page: login incorrect; please try again. Not working neither.


Hi Hicksd8,

I tried your suggestions with code error return:


Code:
Code:
 
#chroot /a 
usage: chroot rootdir command arg...

I went ahead to see if I change the password anyway:

Code:
Code:
 
#passwd root 
passwd (SYSTEM): password database busy. Try again later. Permission denied.

Not working.

Hi rua,

I tried to find mirrored filesystem in vain. Just what I have tried:

After boot into single user mode, I typed code:

Code:
 
#mkdir /tmp/d0
#mount /dev/dsk/c0t0d0s0 /tmp/d0
 
#mkdir /tmp/d1
#mount /dev/dsk/c0t1d0s0 /tmp/d1
mount: /dev/dsk/c0t1d0s0 or /tmp/d1, no such file or directory.
 
#ls /dev/dsk
c0t0d0s0 c0t0d0s2 c0t0d0s4 c0t0d0s6  c0t2d0s0 c0t2d0s2 c0t2d0s4 c0t2d0s6
c0t0d0s1 c0t0d0s3 c0t0d0s5 c0t0d0s7  c0t2d0s1 c0t2d0s3 c0t2d0s5 c0t2d0s7
 
#mount /dev/dsk/c0t2d0s0 /tmp/d1
mount: /dev/dsk/c0t2d0s0 is already mounted; /tmp/d1 is busy, or the allowble number of mount points has been exceeded.

I just couldn't find the mirrored filesystem.

Thanks for all the replies. Any other suggestions? Josh
Last edited by fromtexas0; 04-20-2012 at 08:16 PM.. Reason: first time try on [code] ... [/code].
# 13  
Old 04-20-2012
That should have been:
Code:
chroot /a passwd root

You might also create a regular (non root) user account and see if you can login with it. Perhaps is there some logic that prevent root login in a graphic environment (which is a poor practice anyway).
Can you switch to non graphic mode and see if you can login from there ?
# 14  
Old 04-21-2012
Hi, Jlliagre,

After boot to single user mode and mount the filesystem to /a, I tried your command and it still spit error as follow:

Code:
 
\
INIT: SINGLE USER MODE
#mount /dev/dsk/c0t0d0s0 /a
#chroot /a passwd root
chroot: No such file or directory
#chroot /a
usage: chroot rootdir command arg...

It's not working.

I also tried to login through command-line mode without success. See below:

Code:
 
sunny10 console login: root
Password:
Login incorrect
Login:


Any more comments?

Thanks,
Josh
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